AM3359 datasheet(152/256 Pages) TI1

152 / 256 page

OFFSET

Recommended LPDDR

Device Orientation

OFFSET

LPDDR

Device

AM335x

152

AM3359, AM3358, AM3357, AM3356, AM3354, AM3352, AM3351

SPRS717L – OCTOBER 2011 – REVISED MARCH 2020

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Peripheral Information and Timings

7.7.2.1.2.4 Placement

Figure 7-34 shows the required placement for the LPDDR devices. The dimensions for this figure are

defined in Table 7-37. The placement does not restrict the side of the PCB on which the devices are

mounted. The ultimate purpose of the placement is to limit the maximum trace lengths and allow for

proper routing space. For single-memory LPDDR systems, the second LPDDR device is omitted from the

placement.

Figure 7-34. AM335x Device and LPDDR Device Placement

Table 7-37. Placement Specifications(1)

NO.

PARAMETER

MIN

MAX

UNIT

X(2)(3)

1750

mils

Y(2)(3)

1280

mils

Y Offset(2)(3)(4)

650

mils

Clearance from non-LPDDR signal to LPDDR keepout region(5)(6)

(1) LPDDR keepout region to encompass entire LPDDR routing area.

(2) For dimension definitions, see Figure 7-34.

(3) Measurements from center of the AM335x device to center of LPDDR device.

(4) For single-memory systems, TI recommends that Y offset be as small as possible.

(5) w is defined as the signal trace width.

(6) Non-LPDDR signals allowed within LPDDR keepout region provided they are separated from LPDDR routing layers by a ground plane.

AM3359 Datasheet(PDF) 152 Page - Texas Instruments

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